Videotec MAXIMUS MHXT User manual

EN
English - Instruction manual
IT
Italiano - Manuale di istruzioni
FR
Français - Manuel d’instructions
DE
Deutsch - Bedienungsanleitung
RU
Русский - Руководство по эксплуатации
KO
한국어 - 지침 설명서
ITALIANO
MAXIMUS MHX,
MAXIMUS MHXT
Ex-proof stainless steel housing

EN
English - Instruction manual
ENGLISH
MAXIMUS MHX,
MAXIMUS MHXT
Ex-proof stainless steel housing

Instruction manual - English - EN
3MNVCMHX_1706_EN
Contents
ENGLISH 1
1 About this manual ......................................................................................................... 7
1.1 Typographical conventions.................................................................................................................................. 7
2 Notes on copyright and information on trademarks.................................................. 7
3 Safety rules..................................................................................................................... 7
3.1 ATEX-IECEx certificate details.............................................................................................................................. 9
3.1.1 Temperature .............................................................................................................................................................................. 9
3.1.2 Installation instructions......................................................................................................................................................... 9
3.1.3 Mounting instructions........................................................................................................................................................... 9
3.1.4 Special conditions for safe use..........................................................................................................................................10
3.1.5 Additional information........................................................................................................................................................10
4 Identification................................................................................................................ 11
4.1 Product description and type designation...................................................................................................11
4.2 Product marking ....................................................................................................................................................12
5 Versions ........................................................................................................................ 14
5.1 Tempered glass.......................................................................................................................................................14
5.2 Integrated wiper ....................................................................................................................................................14
5.3 Germanium window.............................................................................................................................................14
5.4 Optical fiber .............................................................................................................................................................14
6 Preparing the product for use .................................................................................... 15
6.1 Safety precautions before use...........................................................................................................................15
6.2 Unpacking and contents.....................................................................................................................................16
6.2.1 Unpacking................................................................................................................................................................................16
6.2.2 Contents....................................................................................................................................................................................16
6.3 Safely disposing of packaging material.........................................................................................................16
6.4 Preparatory work before installation..............................................................................................................16
6.4.1 Parapet mounting .................................................................................................................................................................17
6.4.2 Bracket mounting..................................................................................................................................................................17
6.4.3 Fixing the unit to the pole mount adapter or corner mount adapter................................................................18
6.4.3.1 Fixing with pole mount............................................................................................................................................................................18
6.4.3.2 Fixing with corner adapter......................................................................................................................................................................18
6.4.4 Adjusting the protection grid...........................................................................................................................................18
7 Assembling and installing .......................................................................................... 19
7.1 Range of use............................................................................................................................................................19
7.2 Assembly...................................................................................................................................................................19
7.2.5 Sunshield mounting.............................................................................................................................................................19
7.2.6 Fastening of the wiper blade.............................................................................................................................................19
7.3 Installation................................................................................................................................................................20
7.3.1 How to open the housing...................................................................................................................................................20
7.3.2 Cable entry...............................................................................................................................................................................21
7.3.3 Connection of the power supply line.............................................................................................................................21
7.3.3.1 Connection of the power supply line in 24Vac (without transformer) and 12Vdc..............................................................22
7.3.3.2 120Vac and 230Vac power line connection (without transformer)..........................................................................................23
7.3.3.3 Connection of the power supply line in 24Vac, 120Vac, 230Vac (with transformer) and 12Vdc....................................24

EN - English - Instruction manual
4 MNVCMHX_1706_EN
7.3.4 How to install the camera/lens.........................................................................................................................................24
7.3.5 Connection of the camera to the power supply........................................................................................................25
7.3.5.1 Connection of the camera power supply in 24Vac (without transformer) and 12Vdc......................................................25
7.3.5.2 Connection of the camera's power line in 120Vac and 230Vac (without transformer).....................................................25
7.3.5.3 Connection of the camera power supply in 24Vac, 120Vac, 230Vac (with transformer) and 12Vdc............................26
7.3.6 Camera with analogue video output.............................................................................................................................26
7.3.7 Optical fibre connection .....................................................................................................................................................27
7.3.8 Signal output of an IP camera...........................................................................................................................................28
7.3.9 Connection of the IP camera's RS-485 output ............................................................................................................28
7.3.10 Serial line connection........................................................................................................................................................29
7.3.11 Special controls....................................................................................................................................................................30
7.3.12 Enabling the wiper .............................................................................................................................................................31
7.3.12.1 Enable from the remote button..........................................................................................................................................................31
7.3.12.2 Enable from the keyboard.....................................................................................................................................................................31
7.3.13 Enabling the washer (Washer) .......................................................................................................................................31
7.3.14 Enable an external illuminator from the day/night camera output.................................................................32
7.3.15 Closing the housing...........................................................................................................................................................33
7.3.16 Earth wiring connection...................................................................................................................................................33
8 Instructions for safe operation................................................................................... 34
8.1 Safe operation.........................................................................................................................................................34
8.1.1 Commissioning ......................................................................................................................................................................34
8.1.2 Safety rules...............................................................................................................................................................................34
8.1.3 Explosion prevention rules ................................................................................................................................................34
9 Switching on ................................................................................................................ 34
9.1 Before powering the product in an explosive atmosphere....................................................................34
10 Maintenance and cleaning ....................................................................................... 35
10.1 Maintenance and cleaning by users.............................................................................................................35
10.1.1 Routine (to be carried out regularly)............................................................................................................................35
10.1.1.1 Cleaning the glass....................................................................................................................................................................................35
10.1.1.2 Replacing the rear cover plate gasket ..............................................................................................................................................35
10.1.1.3 Cleaning the germanium window.....................................................................................................................................................35
10.1.1.4 Fuses replacement...................................................................................................................................................................................36
10.1.1.5 Cleaning the device.................................................................................................................................................................................36
10.1.1.6 Inspecting the cables..............................................................................................................................................................................36
10.1.2 Extraordinary (to be done only under particular circumstances)......................................................................36
11 Disposal of waste materials...................................................................................... 37
12 Troubleshooting ........................................................................................................ 37
13 Technical data ............................................................................................................ 38
13.1 MHX..........................................................................................................................................................................38
13.1.1 General....................................................................................................................................................................................38
13.1.2 Mechanical ............................................................................................................................................................................38
13.1.3 Electrical .................................................................................................................................................................................38
13.1.4 Environment .........................................................................................................................................................................39
13.1.5 Certifications.........................................................................................................................................................................39
13.2 MHXT .......................................................................................................................................................................39
13.2.1 General....................................................................................................................................................................................39
13.2.2 Mechanical ............................................................................................................................................................................39
13.2.3 Electrical .................................................................................................................................................................................39

Instruction manual - English - EN
5MNVCMHX_1706_EN
13.2.4 Environment .........................................................................................................................................................................40
13.2.5 Certifications.........................................................................................................................................................................40
13.3 Electrical rating ....................................................................................................................................................41
13.4 Cable glands..........................................................................................................................................................41
14 Technical drawings .................................................................................................... 42

EN - English - Instruction manual
6 MNVCMHX_1706_EN

Instruction manual - English - EN
7MNVCMHX_1706_EN
1 About this manual
Before installing and using this unit, please read this
manual carefully. Be sure to keep it handy for later
reference.
1.1 Typographical conventions
DANGER!
Explosion hazard.
Read carefully to avoid danger of explosion.
DANGER!
High level hazard.
Risk of electric shock. Disconnect the
power supply before proceeding with any
operation, unless indicated otherwise.
CAUTION!
Medium level hazard.
This operation is very important for the
system to function properly. Please read
the procedure described very carefully and
carry it out as instructed.
INFO
Description of system specifications.
We recommend reading this part carefully
in order to understand the subsequent
stages.
2 Notes on copyright and
information on trademarks
The mentioned names of products or companies are
trademarks or registered trademarks.
3 Safety rules
The manufacturer declines all responsibility
for any damage caused by an improper use
of the appliances mentioned in this manual.
Furthermore, the manufacturer reserves
the right to modify its contents without any
prior notice. The documentation contained
in this manual has been collected with great
care, the manufacturer, however, cannot
take any liability for its use. The same thing
can be said for any person or company
involved in the creation and production of
this manual.
This device must be connected to an
earth conductor (protective earth).
The connection must be made only
throught the internal connection J9 (
7.3.3 Connection of the power supply line,
page 21). External equipotential bonding
connections must also be performed
but only for supplementary bonding
connection to earth, and required by local
codes or authority.
Fig. 1
External hole for Equipotential bonding
required by authority. Not to be intended as
protective earth connections.
• Read these instructions.
• Keep these instructions.
• Heed all warnings.
• Follow all instructions.

EN - English - Instruction manual
8 MNVCMHX_1706_EN
• To reduce the risk of ignition of hazardous
atmospheres, disconnect the equipment from the
supply circuit before opening. Keep the product
tightly closed when in operation.
• The equipment is certified for use in ambient
temperatures from -40°C to +60°C (from -40°F to
+140°F).
• Installation of this equipment shall be carried
out by suitably trained technical personnel in
accordance with the applicable code of practice
IEC/EN 60079-14.
• The temperature of the surfaces of the device
is increased by exposure to direct sunlight.
The surface temperature class of the device
was determined only with ambient ambient
temperature, without taking into consideration
direct sunlight.
• Choose an installation surface that is strong
enough to sustain the weight of the device, also
bearing in mind particular environmental aspects,
such as exposure to strong winds.
• Since the user is responsible for choosing the
surface to which the unit is to be anchored, we
do not supply the fixing devices for attaching the
unit firmly to the particular surface. The installer is
responsible for choosing fixing devices suitable for
the specific purpose on hand. Use methods and
materials capable of supporting at least 4 times the
weight of the device.
• Make sure that the device is firmly anchored.
• A power disconnect device must be included
in the electrical installation, and it must be very
quickly recognizable and operated if needed.
• It is only allowed to open back flange of the
housing for cabling of the system. The other
flanges must be opened by the manufacturer only.
• Do not use worn or old power cables.
• For technical services, consult only and exclusively
authorized technicians.
• Before proceeding with installation, check the
supplied material to make sure it corresponds
to the order specification by examining the
identification labels (4.2 Product marking, page
12).
• This device was designed to be permanently
installed on a building or a suitable structure.
• Do not allow children or unauthorised people to
use the appliance.
• A disconnecting device, readily and easily
accessible, must be incorporated in the electrical
system of the building for rapid intervention.
• For continued protection against risk of fire,
replace only with same type and rating of fuse.
Fuses must be replaced only by service personnel.
• Connect the device to a power source
corresponding to the indications given on the
marking label. Before proceeding with installation
make sure that the power line is properly isolated.
For devices powered at 24Vac the supply voltage
should never exceed the (±10%) limit. For devices
powered at 12Vdc the supply voltage should never
exceed the (±5%) limit.
• This is a Class A product. In a domestic
environment this product may cause radio
interference. In this case the user may be required
to take adequate measures.

Instruction manual - English - EN
9MNVCMHX_1706_EN
3.1 ATEX-IECEx certificate details
3.1.1 Temperature
The relation between ambient temperature range, gas group and Ex code is as follows:
Ambient temperature Gas group EX marking
-40°C to +60°C IIB II 2 G Ex db IIB T6 Gb Ta -40°C to +60°C
-20°C to +60°C IIC II 2 G Ex db IIC T6 Gb Ta -20°C to +60°C
-40°C to +60°C IIC II 2 G Ex db IIC T6 Gb Ta -40°C to +60°C
Tab. 1
3.1.2 Installation instructions
All cable connectors/glands shall be ATEX/IECEx certified, as appropriate, in type of explosion protection "d"
and/or "tb", rated IP66/67, suitable for the conditions of use and correctly installed.
When conduit is used, a suitable ATEX/IECEx certified stopping box shall be used, as appropriate, in type of
explosion protection "d" and/or "tb", rated IP66/67, suitable for the conditions of use and correctly installed. The
stopping box must be fitted within 25mm (1in) from the enclosure wall.
Unused cable entries are to be closed off using closing devices ATEX/IECEx certified, as appropriate, in type of
explosion protectio n“d”and/or "tb", rated IP66/67, suitable for the conditions of use and correctly installed.
For ambient temperatures below –10°C use field wiring suitable for minimum ambient temperature.
Connectors/cable glads and cables must be suitable for an operating temperature of at least +30°C above the
ambient termperature.
3.1.3 Mounting instructions
The MHX and MHXT series CCTV camera housings can be mounted at any angle between ±90° from the
horizontal.

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10 MNVCMHX_1706_EN
3.1.4 Special conditions for safe use
• The O-ring at the back flange must be replaced by a new one after each opening of the back flange, in order
to maintain the IP66/67 ingress protection rating.
• The maximum constructional gap (ic) is less than that required by Table 3 of EN 60079-1:2014 as detailed
below:
FLAMEPATH DIMENSIONS MAXIMUM GAP MINIMUM WIDTH
Spigot joint. Between the rear flange and
the main body of the housing. Drawings
BRT2MHXNFP and CRP2MHXNC.
Shaft: 132.96mm min
Bore: 133.06mm max
0.1mm 59.4+4.22mm
Cylindrical joint. Between wiper shaft
and bore. Drawings BRT2MHXALWIP and
BRT2MHXBUST.
Shaft: 12.79mm min
Bore: 13.03mm max
0.24mm 40.1mm
Tab. 2
• The cameras to be installed shall not be electromagnetic or contain lasers, continuous wave sources or
ultrasonic energy radiating equipment.
• The cameras to be installed shall not contain cells or batteries.
• The cameras to be installed shall dimensionally be no greater than 80mm (wide) x 82mm (high) x 245mm
(long) and be of a basic geometric form, and installed at least 10mm from the inner surface of the enclosure
window.
3.1.5 Additional information
The MHX and MHXT series CCTV camera housings in addition have passed the tests for Ingress Protection to
IP66 and IP67 in accordance with EN60529:1991/A1 2001.

Instruction manual - English - EN
11MNVCMHX_1706_EN
4 Identification
4.1 Product description and type
designation
The MHX series explosion-proof housing has been
designed for use with cameras operating in industrial
environments in which there may be an explosive
atmosphere due to gas, vapours, mists, or air or
powder mixtures.
The MHX housing are made of electropolished
AISI 316L stainless steel. They are constituted by
a cylindrical body closed by two flanges, inside of
which a camera/lens can be installed and powered.
The rear flange incorporates the internal slide where
the camera must be positioned, it contains also the
internal electronics that manages the power supply
and the heating devices of the housing.
The cables entry is made through two 3/4" NPT
threaded holes in the rear flange, the connections
must be made in accordance with IEC/EN60079-14.
The containment body is made from a tube of
diameter 5", with a thickness not less than 4mm. The
front flange has toughened glass window.
The housing has an IP66/IP67 protection degree and
its operating temperature is from -40°C to 60°C (from
-40°F to 140°F).

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12 MNVCMHX_1706_EN
4.2 Product marking
02
01
03
04
09
10
05 06 07 08 11
Fig. 2
1. CE mark and number of notified body that
carries out production checks.
2. Manufacturer’s name and address
3. Model identification code
4. Serial number (the serial number are 12 numeric
characters, the second and the third digits
define the last two numbers of the year of
manufacture)
5. Supply voltage (V)
6. Current consumption (A)
7. Frequency (Hz)
8. Housing power consumption (W)
9. Power consumption camera/lens (W)

Instruction manual - English - EN
13MNVCMHX_1706_EN
10. ATEX certification:
• ATEX certificate number
• Classification for zone type, protection method, temperature class for which this product may be used in
compliance with the ATEX directive
ATEX MARKING
Ambient tempe-
rature
Gas
group
Gas marking Dust marking
-40°C to +60°C IIB II 2 G Ex db IIB T6 Gb Ta -40°C to +60°C II 2 D Ex tb IIIC T85°C Db Ta -40°C to +60°C
-20°C to +60°C IIC II 2 G Ex db IIC T6 Gb Ta -20°C to +60°C II 2 D Ex tb IIIC T85°C Db Ta -20°C to +60°C
-40°C to +60°C IIC II 2 G Ex db IIC T6 Gb Ta -40°C to +60°C II 2 D Ex tb IIIC T85°C Db Ta -40°C to +60°C
Tab. 3
11. IECEx certification:
• IECEx certificate number
• Classification for zone type, protection method and temperature class for which this product may be used
in compliance with the IECEx standard
IECEX MARKING
Ambient tempe-
rature
Gas
group
Gas marking Dust marking
-40°C to +60°C IIB Ex db IIB T6 Gb Ta -40°C to +60°C Ex tb IIIC T85°C Db Ta -40°C to +60°C
-20°C to +60°C IIC Ex db IIC T6 Gb Ta -20°C to +60°C Ex tb IIIC T85°C Db Ta -20°C to +60°C
-40°C to +60°C IIC Ex db IIC T6 Gb Ta -40°C to +60°C Ex tb IIIC T85°C Db Ta -40°C to +60°C
Tab. 4

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14 MNVCMHX_1706_EN
5 Versions
5.1 Tempered glass
The tempered glass version is designed to withstand
violent impacts.
Fig. 3
5.2 Integrated wiper
The product can be equipped with a wiper.
The integrated wiper can be controlled remotely from
a keyboard or dry contact.
Fig. 4
5.3 Germanium window
When the unit is working the protection
grid must always be installed.
The version with germanium window has been
developed for applications with thermal cameras.
This version is fitted with a protective AISI 316L
stainless steel grid.
Field of application from 7.5µm to 14µm.
Fig. 5
5.4 Optical fiber
The product can be equipped with a fibre optic
transmitter (Single Mode or Multi Mode) which
enables to transmit data and video over long
distances.
Fig. 6

Instruction manual - English - EN
15MNVCMHX_1706_EN
6 Preparing the product for
use
Any change that is not expressly approved
by the manufacturer will invalidate both
the guarantee and certification.
Before installation, make sure the power
supply and protection specifications of the
device correspond to those in the original
order. Use of unsuitable appliances can
cause serious hazards, risking the safety of
personnel and of the installation.
6.1 Safety precautions before use
Make sure that all the equipment are
certified for the application and for the
environment in which they will be installed.
The electrical system to which the unit is
connected must be equipped with a 15A
max automatic bipolar circuit breaker.
This circuit breaker must be of the Listed
type. The minimum distance between the
contacts must be 3mm (0.1in). The circuit
breaker must be provided with protection
against the fault current towards the
ground (differential) and the overcurrent
(magnetothermal).
The device can only be considered to be
switched off when the power supply has
been disconnected and the connection
cables to other devices have been removed.
A power disconnect device must be
included in the electrical system, and it
must be very quickly recognizable and
operated if needed.
Before doing any technical work on the
device make sure that the power supply is
disconnected.
Make connections and tests in the
laboratory before carrying out installation
on site. Use appropriate tools for the
purpose.
Before proceeding with any operations,
make sure that the mains voltage is correct.
For handling there aren’t request of
particular demands to assigned staff,
therefore it is recommended, to carry out
such operation observing the common
rules of accident prevention.

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16 MNVCMHX_1706_EN
6.2 Unpacking and contents
6.2.1 Unpacking
When the product is delivered, make sure that the
package is intact and that there are no signs that it
has been dropped or scratched.
In case of obvious signs of damage to the packaging
please contact the supplier immediately.
Keep the packaging in case you need to send the
product for repairs.
6.2.2 Contents
Check the contents to make sure they correspond
with the list of materials as below:
• Ex-proof housing
• Sunshield
• Document: Important safety instructions
• Silicone sheath
• Cable ties
• Spacers and screws for mounting the sunshield
• Plastic spacers and screws ¼" for camera and lens
mounting
• Spare O-rings
• Lubricant oil
• Extraction screws
• Wiper brush (version with wiper)
• Instruction manual
6.3 Safely disposing of packaging
material
The packaging material can all be recycled. The
installer technician will be responsible for separating
the material for disposal, and in any case for
compliance with the legislation in force where the
device is to be used.
When returning a faulty product we recommend
using the original packaging for shipping.
6.4 Preparatory work before
installation
Use appropriate tools for the installation.
The particular nature of the site where the
device is to be installed may mean special
tools are required for installation.
Choose an installation surface that is
strong enough to sustain the weight of
the device, also bearing in mind particular
environmental aspects, such as exposure to
strong winds.
Make sure that the device is firmly
anchored.
The device must be installed and
maintained only and exclusively by
qualified technical personnel.
For technical services, consult only and
exclusively authorized technicians.
Since the user is responsible for choosing
the surface to which the unit is to be
anchored, we do not supply the fixing
devices for attaching the unit firmly to
the particular surface. The installer is
responsible for choosing fixing devices
suitable for the specific purpose on hand. In
general use methods and materials capable
of supporting at least four times the weight
of the device.
It is possible to install the unit with several brackets.
We strongly recommend using only approved
brackets and accessories during installation.

Instruction manual - English - EN
17MNVCMHX_1706_EN
6.4.1 Parapet mounting
First of all secure the base of the adapter to the final
destination. Use screws that can bear at least 4 times
the weight of the unit.
Apply a generous amount of thread locking
compound (Loctite 270).
Tighten the screws.
The thread compound must cure for one hour, allow
for this period prior to completing the installation.
It’s possible to secure the base (01) to the column
adapter NXFWBT using 4 M5 countersunk screws (02)
provided.
Secure the joint (03) to the base through nuts and
washers supplied.
02
03
01
Fig. 7
Fasten the housing at the junction with the M6
screws and washers provided.
Fig. 8
Apply a generous amount of thread locking
compound (Loctite 270).
Tighten the screws.
Pay attention to the fixing. Tightening
torque: 9-12Nm max.
The thread compound must cure for one hour, allow
for this period prior to completing the installation.
6.4.2 Bracket mounting
The bracket can be fixed to the vertical wall. Use
screws and wall fixing devices that can bear at least
four times the weight of the unit.
Fig. 9
To fix the device to the bracket, use 4 plain washers,
4 stainless steel grower washer and 4 socket head
stainless steel screw M6 provided.
Make sure the thread are free of dirt and debris.
Apply a generous amount of thread locking
compound (Loctite 270) on the 4 screws.
Tighten the screws.
Pay attention to the fixing. Tightening
torque: 9-12Nm max.
The thread compound must cure for one hour, allow
for this period prior to completing the installation.

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18 MNVCMHX_1706_EN
6.4.3 Fixing the unit to the pole mount
adapter or corner mount adapter
To install the product on a pole or at a wall corner,
first of all fix the unit to the wall bracket (6.4.2 Bracket
mounting, page 17).
6.4.3.1 Fixing with pole mount
Fix the wall bracket to the pole mount adapter
using 4 washers, 4 stainless steel grower washer
and 4 hexagon stainless steel bolts (A4 class 70)
M10x30mm.
Make sure the thread are free of dirt and debris.
Apply a generous amount of thread locking
compound (Loctite 270).
Tighten the screws.
Pay attention to the fixing. Tightening
torque: 35Nm max.
The thread compound must cure for one hour, allow
for this period prior to completing the installation.
Fig. 10
6.4.3.2 Fixing with corner adapter
Fix the wall bracket to the corner mount adapter
using 4 washers, 4 stainless steel grower washers
4 hexagon stainless steel bolts (A4 class 70)
M10x30mm.
Make sure the thread are free of dirt and debris.
Apply a generous amount of thread locking
compound (Loctite 270).
Tighten the screws.
Pay attention to the fixing. Tightening
torque: 35Nm max.
The thread compound must cure for one hour, allow
for this period prior to completing the installation.
Fig. 11
6.4.4 Adjusting the protection grid
The protection grid may be adjusted moving it
upwards, to fit it with the field of view of certain
cameras.
Fig. 12